云南某低品位硫化银铅锌矿选矿优化研究

针对云南某低品位银铅锌矿选矿回收率较低的现状,以现场生产原矿作为试验给矿,在原矿工艺矿物学的基础上开展了试验研究。通过优化磨矿细度,控制石灰用量,采用乙硫氮、丁基铵黑药、25#黑药组合捕收剂代替单一捕收剂,硫酸锌、亚硫酸钠代替单一抑制剂,在原矿含铅0.79%,含锌1.51%,含银95.04g/t时,获得了含铅48.65%,铅回收率89.87%,含银4 012g/t,银回收率为61.60%的银铅精矿,含锌46.21%,锌回收率90.43%,含银891g/t,银回收率为27.70%的银锌精矿,铅、锌、银精矿品位和回收率较生产指标提高明显。试验成果取得了良好的工业应用。     

河南某富银铅锌矿选矿试验研究

为了最大程度将银富集在铅精矿中,采用先选铅银后选锌的优先浮选工艺。着重进行了铅银混浮时粗选捕收剂、抑制剂种类试验。试验结果表明,乙硫氮和丁基铵黑药组合捕收剂与硫酸锌和亚硫酸钠组合抑制剂能获得较好的结果。闭路试验可以获得含铅68.14%、铅回收率94.21%、含银4407.55g/t、银回收率91.29%的铅精矿和含锌56.32%、锌回收率85.62%的锌精矿。     

某低品位铅锌硫化矿浮选试验研究

某硫化铅锌矿含铅锌原矿品位低、嵌布粒度细、伴生关系复杂。通过多种方案的比较,采用优先浮选抑锌浮铅的选别流程,试验采用乙硫氮作为优先选铅的捕收剂,石灰作为调整剂以及黄铁矿的抑制剂,硫酸锌和亚硫酸钠作为闪锌矿的抑制剂,之后利用硫酸铜作为闪锌矿的活化剂,用丁基黄药作为捕收剂来实现铅与锌的有效分离。试验获得铅精矿含铅51.00%、铅回收率86.63%、含银518 g/t、银回收率47.41%,锌精矿含锌51.20%、锌回收率85.27%、含银234 g/t、银回收率38.38%。     

东北某低品位含银铅锌矿低碱分离试验研究

为高效开发利用东北某低品位含银铅锌矿,解决现场分选工艺中存在铅锌精矿铅锌互含较高,伴生金属银回收率较低,且废水难于直接回用的难题,在工艺矿物学研究基础上,开展了铅锌低碱浮选试验研究,通过铅锌浮选条件试验确定适宜的选矿工艺流程及药剂制度。结果表明:针对含铅1.33%、锌2.51%、银19.5 g/t的原矿,采用铅锌优先浮选流程,在磨矿细度为-0.074 mm占75.42%情况下,以碳酸钠为p H调整剂、硫酸锌和亚硫酸钠为抑制剂、苯胺黑药+丁铵黑药为捕收剂,经“1粗3精2扫”选铅,清水闭路试验,得到含铅57.52%、含锌4.84%、含银585.40 g/t、铅回收率85.38%、银回收率57.63%的铅精矿;选铅尾矿以硫酸铜为活化剂、石灰为抑制剂、苯胺黑药+丁胺黑药为捕收剂,经“1粗2精2扫”选锌,获得了含锌51.85%、含铅1.38%、含银52.20 g/t、锌回收率90.71%、银回收率11.65%的锌精矿。回水条件下铅锌指标与清水时各项指标相当。试验通过在铅锌浮选中采用苯胺黑药+丁铵黑药做铅锌矿物捕收剂,使常规抑制剂能够代替石灰或减少石灰用量,从而实现硫化铅锌矿的低碱度分选,并使矿石...     

某富银铅锌多金属矿浮选研究

云南某富银铅锌多金属矿中的铅、锌主要以硫化矿形式存在,含银高达130g/t,主要赋存于方铅矿中。针对矿石性质,采用对铅、银具有高选择性的捕收剂和对闪锌矿具有良好抑制效果的组合调整剂,进行优先浮选铅、银,选铅尾矿浮锌的试验研究。研究结果表明,原矿含铅2.56%,含银130g/t,含锌1.08%,可获得铅精矿含铅71.13%、银3384.10g/t,铅回收率为88.45%,银回收率为87.25%;锌精矿含锌50.10%,锌回收率为83.80%的试验指标。     

某地低品位铜铅锌银矿绿色环保选矿试验研究

对青海某地低品位铜铅锌银矿体进行了选矿试验研究。研究结果表明, 采用铜-铅-锌优先浮选方案和无毒(低毒)选矿药剂, 可从含铜0.16%、含铅2.60%、含锌3.84%、含银61 g/t的试样中获得含铜16.37%、铜回收率为49.07%、含银1 231 g/t、银回收率为9.67%的铜精矿, 含铅55.06%、铅回收率为86.81%、含银769 g/t、银回收率为51.69%的铅精矿和含锌46.80%、锌回收率为81.65%、含银206 g/t、银回收率为22.64%的锌精矿, 铜精矿、铅精矿和锌精矿中银的总回收率为84.00%。     

用新型螯合捕收剂分选云南某氧化铅锌矿石

云南某高铅、高锌、高银氧化铅锌矿主要成分为异极矿和白铅矿,其含量分别为58.31%和22.79%,且银含量高达352.90 g/t。为了解决冶炼前的铅锌互含问题,以昆明冶金研究院研制的新型螯合捕收剂C6403为白铅矿浮选捕收剂,进行了异极矿和白铅矿的高效分离试验。结果表明,采用3粗2精、中矿顺序返回的闭路流程处理该矿石,获得的铅精矿铅品位为42.04%、含锌9.63%、含银668.15 g/t、铅回收率为83.22%、银回收率为66.23%,获得的锌精矿锌品位为43.51%、含铅4.56%、含银183.30 g/t、锌回收率为89.36%、银回收率为33.77%,铅精矿、锌精矿的质量均达到了冶炼要求。     

四川某硫化铅锌矿石铅浮选工艺优化研究

四川某硫化铅锌矿铅锌品位低,含硫较高,矿石中部分方铅矿、闪锌矿嵌布粒度较细,呈细脉状、浸染状嵌布,影响铅锌浮选分离指标。在现有的分选工艺流程下,铅精矿中含锌较高,影响锌回收率。为此,在工艺矿物学研究基础上,开展了铅浮选工艺优化试验研究。新工艺采用25#黑药作选铅捕收剂,铅粗精矿进行再磨,降低了铅精矿锌含量,提高了铅精矿铅品位和锌精矿锌回收率;小型闭路试验在原矿含铅1.21%、含锌2.19%、含银25.48 g/t的条件下,可获得含铅45.58%、含锌5.43%、含银861.72 g/t,铅回收率84.11%的铅精矿;含铅1.11%、含锌54.10%,锌回收率87.14%的锌精矿。铅精矿、锌精矿的品位分别较现场工艺提升2.42、3.72个百分点,铅、锌回收率分别提高0.26、4.11个百分点,研究结果为该铅锌矿的实际生产提供指导。     

云南某富银硫化铅锌矿中伴生银的综合回收研究

根据云南某富银铅锌多金属硫化矿的矿石性质特点, 进行了铅锌优先浮选试验研究。结果表明, 在原矿含铅2.56%、含锌1.08%、含银130 g/t的情况下, 可获得铅精矿含铅71.13%、铅回收率为88.45%, 锌精矿含锌50.10%、锌回收率为83.80%的试验指标。与此同时, 银矿物在铅精矿中得到较好富集, 铅精矿含银3384.10 g/t、银回收率为87.25%。     

广东大尖山某铅锌多金属矿石选矿试验

广东大尖山某铅锌多金属矿石铅品位为2.10%、锌品位为3.805%、银含量为35.85 g/t。矿石铅、锌均主要是以硫化矿的形式存在，硫化铅和硫化锌分别占总铅和总锌的95.71%和95.84%。为给该矿石开发利用提供依据，进行了选矿工艺试验。结果表明：矿石磨细至-74 μm占80%，以CaO为矿浆pH调整剂、硫酸锌为抑制剂、丁胺黑药+丁黄药为捕收剂，经1粗3精4扫铅浮选，铅浮选尾矿以CaO为矿浆pH调整剂、CuSO₄为活化剂、丁黄药为捕收剂，经1粗3精4扫锌浮选，获得了铅精矿铅品位60.29%、铅回收率92.02%、含银826.13 g/t、银回收率72.75%、含锌3.64%，锌精矿锌品位48.32%、锌回收率92.30%、含铅0.95%的指标。     

China rare earth market review

正November 1~10,2014Chinese rare earth market was still inactive.Demand for rare earth products was weak.Consumers took a wait-and-see attitude for lower price.As it was an off season for rare earth products,it was expected that prices of rare earth could continue turbulence at the bottom in short terms.Due to a sharp drop,demand for rare earth from downstream recovered.Affected by new energy vehicles,wind powder and energy-efficient appliances,production of rare earth permanent     

China rare earth market review

正August 1~10,2014 There was some good news in rare earth industry recently.Restructuring plans of rare earth groups led by Baotou IronSteel Group and Xiamen Tungsten Group respectively have been approved by MIIT.And rare earth storage policy,which had been expected for a very long time,has been launched officially.Pushed by the good news,rare earth price started to rebound since August 5.Price of didymium oxide and dysprosium oxide rose about 1% to 2%,averagely.About 10% of     

China rare earth market review

正July 1~10,2014Due to weak demand from downstream industry and slow transactions,rare earth market remained weak and price of rare earth products continued to decline.There was no sign of recovery in downstream market.The market of NdFeB magnetic materials and phosphor was depressed.Catalyst,     

New energy vehicle:an opportunity for rare earth magnets

<正>Extracted from Securities Guide 1.Popularity of new energy vehicles—an irresistible market trend1.1 Progress of new energy vehicles Chinese Premier Li Keqiang said recently on a visit to Xi'an BYD Autos that new energy vehicles,especially new energy bus,can lessen environment and noise pollution.He encouraged the use of new     

注浆加固技术在十三矿-685 m进风大巷中的应用

针对煤矿开采深度不断向深部延伸,掘进巷道受深部高应力的影响越来越大,巷道围岩整体稳定性差,矿山压力显现越剧烈现象,一般锚网喷加锚索支护无法从根本上控制巷道的变形。总结了平煤股份十三矿-685 m进风大巷注浆加固技术,依据对巷道掘进之后变形监测数据的采集,对巷道变形机理进行分析研究,并对注浆时段进行了合理选择,在对巷道的注浆工艺进行了充分论证的基础上,对巷道进行了注浆。注浆后效果表明:巷道滞后注浆时间段的选择非常重要,巷道在恰当的时间内进行注浆加固施工,能有效控制巷道的变形,巷道注浆后变形量明显减小,岩体的稳定性明显增强,减少了巷道日常维修工作,降低了矿井的生产成本,保障了矿井的安全生产。     

稀散金属产业的观察与思考

分析了近年来国内外稀散金属产业的生产、应用、资源与市场状况.铟锡氧化物靶材、砷化镓晶片、锗红外材料、铼高温合金和硒在电解锰及玻璃的应用等已成为稀散金属的主要应用领域.稀散金属的产量快速增长达到历史高位而导致了市场的失衡.以GaInP_2/GaAs/Ge,CIGS和CdTe为代表的非硅系太阳能电池是稀散金属的新兴应用领域,将给稀散金属带来日益增长的需求.     

China rare earth market review

正November 21~30,2014Due to weak demand from downstream industries,transactions of rare earth in Chinese domestic market were inactive.It was difficult to sell any rare earth products except for dysprosium oxide and terbium oxide.Suppliers lost confidence in recent market.Demand for rare earth products was soft.Consumers continued to take a wait-and-see attitude.Rare earth export market remained slow.     

Current situation and future trend of China rare earth luminescent materialindustry(continued)

<正>Developing ecological lighting source The world is facing the big problem of energy shortage today and the contradiction between economy development and environmental protection is worsened.Therefore,people are more likely to choose an ecological light source that is more energy efficient and environmental friendly.The choice provides great opportunity for the development of rare earth optical material industry in China.The concept of green lighting positions rare earth luminescent material as a leading player in illumination market.The light source of both rare earth luminescent lamp and LED lamp is ecological and energy saving.This is why     

Galaxy Magnets achieved the net profit of 34.02 million yuan in the first six months of 2014

正Galaxy Magnet announced its financial results for the first half of 2014 on August 14.For the first six months ended on 30 June 2014,Galaxy Magnet achieved operation income of RMB 182.3 million,up8.40% over the same period of 2013,and the net profit attributable to the shareholders of the listed company of 34.02 million yuan,increasing 35.49% over the same period of last year.Stable performance increase was led by development of new customers and application market of magnets.     

Rare Earth Application in Steel in China

<正>China has rich rare earth resources.Output of rare earth and steel in China ranks the top first in the world.However,there is still certain distance between the steel produced in China and developed countries from the point of varieties and quality.China still has to import some types of steel.Improving the quality should be emphasiZed in future development of steel industry in China.Rare earth can be used to upgrade traditional steel